Let me trace my steps.
My 1st step is to copy the file and to mount it onto Daemon Tools.
2nd, I locate the largest m2ts file
3rd, I open HDBDSplit, add the m2ts file and set it to 4400
4th I create and select the destination folder
5th, I split it and after its gone past two parts, I stop it.
6th, I open TSMuxerGUI, go to the destination folder and select part 1.
7th, I was randomly selecting a video file but thanks to your screen shot, I now know where to find the right file. As far as audio is concerned I'l either select a 6 channel AC3 file or select them all.
Also, thanks to your screen shot, I see that I was skipping a step. I've been clicking the Create BluRay Disk option in the output screen where I see you have the TS Muxing clicked. Is that done 1st? I just thought to click on BluRay as the output and figured thats what muxing was doing....converting the m2ts file to a BluRay format through muxing.
On the splitting, I agree that I need to split to smaller units and I've been doing that but I just keep getting data disks and non-playable disks. Only once did I get a pure video image but no sound. That's when I selected TrueHD. So, have I discovered a missed step in not hitting the TS Muxing first and then the BluRay option? Thanks for hanging in ther...as they say, a picture is worth a 1,000 words.